1 files changed, 1 insertions, 1 deletions
diff --git a/Juick/ViewControllers/MessagesViewController.m b/Juick/ViewControllers/MessagesViewController.m
index 5a5a794..71f4271 100644
--- a/Juick/ViewControllers/MessagesViewController.m
+++ b/Juick/ViewControllers/MessagesViewController.m
@@ -117,7 +117,7 @@
         if (lastMsg != nil) {
             NSNumber *lastMid = lastMsg.mid;
             if (![self.path isEqualToString:[APIClient threadUrl]]) {
-                [self.params setObject:lastMid forKey:@"before_mid"];
+                self.params = [@{@"before_mid":lastMid} mutableCopy];
             }
             [self refreshData];
         }